diff --git a/docs/conf.py b/docs/conf.py
index c44fa35bd..389569bf3 100755
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -27,8 +27,7 @@
 extensions = ['sphinx.ext.autodoc', 'sphinx.ext.doctest', 
               'sphinx.ext.intersphinx', 'sphinx.ext.todo', 
               'sphinx.ext.coverage', 'sphinx.ext.pngmath', 
-              'sphinx.ext.ifconfig', 'sphinx.ext.viewcode',
-			        'matplotlib.sphinxext.plot_directive']
+              'sphinx.ext.ifconfig', 'sphinx.ext.viewcode']
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['templates']
@@ -224,24 +223,3 @@
 
 # Example configuration for intersphinx: refer to the Python standard library.
 intersphinx_mapping = {'bedtools': ('http://bedtools.readthedocs.org/en/latest/', None)}
-
-class Mock(object):
-    def __init__(self, *args, **kwargs):
-        pass
-
-    def __call__(self, *args, **kwargs):
-        return Mock()
-
-    @classmethod
-    def __getattr__(cls, name):
-        if name in ('__file__', '__path__'):
-            return '/dev/null'
-        elif name[0] == name[0].upper():
-            return type(name, (), {})
-        else:
-            return Mock()
-
-MOCK_MODULES = ['numpy', 'matplotlib', 'matplotlib.pyplot', 
-                'matplotlib.sphinxext', 'matplotlib.sphinxext.plot_directive']
-for mod_name in MOCK_MODULES:
-    sys.modules[mod_name] = Mock()